When this mod and Natural Gas are installed at the same time, this mod changes the fluidbox indices on the formaldehyde recipe to 1.

It's not clear why this would have been done, since that's a chemical plant recipe that would never appear in the laser mill. And it was present in the earliest available version of the original 1.1 mod, so no trying to guess from the changelog. But it doesn't seem to be necessary, commenting it out causes no problems as far as I can tell, and having it in there results in some really weird connections, particularly with mods that change pipe positions. (Not that this mod works with unmodified Assembler Pipe Passthrough anyway, since it chokes on the laser mill, but it also has inconvenient results with Cosmoros' upcoming mod that manually adjusts some buildings.)